Should I replace the ring and pinion

[brap999]

I have a ‘63 c10 with the 12 bolt with a 17 spline pinion. The pinion bearing went bad, it wobbles all over. I’m pulling it all apart to do a complete rebuild and upgrade to 5 lug 30 spline axles. It’s a 3.73 which I’m happy with, it’s never made any noise and driven fine until the bearing went out and I got a vibration from it. If I find that the ring and pinion is in good shape am I ok to keep using it? Or should I buy an aftermarket 30 spline Ring and pinion. Just wanted suggestions from those that have ‘been there and done that’. Thanks.
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[mongocanfly]

I would inspect that r&p really good...if its bad and with all your wanting to do your probably gonna be cheaper to swap the entire axle out...if your not familiar with settimg r&p backlash and have to pay to have it done plus all the other items on your list it could get pricey...

[Wrenchbender Ret]

It will probably have a sing to it if you use those gears regardless how good they look.
I'm with Mongo. It will be cheaper to get a salvage axle.

[PGSigns]

Once the pinion bearing went bad it will wear the ring and pinion with a new pattern and not a very good one. When you put it all back together you will find you cant get a good pattern on it. I would jut find another rear in good shape and go from there. Yu will be money ahead.
Jimmy

[Captainfab]

If time and/or money is an issue, a used differential is not a bad idea. The only one that will be a direct bolt in would be another '63 or a '64 truck 12 bolt. A '65-'72 truck 12 bolt has a different panhard bar mount.

Now if you have the time and money and want to do it right to last a long time, rebuild the '63 12 bolt you have. Yes I would go with a new ring and pinion.

[brap999]

Thanks for all the responses. I’m on a budget but it seems the only right way to do this is to replace the ring and pinion as well. I’d rather rebuild it myself for the learning experience.

[homemade87]

Originally Posted by brap999

Thanks for all the responses. I’m on a budget but it seems the only right way to do this is to replace the ring and pinion as well. I’d rather rebuild it myself for the learning experience.

A learning experience it will be . There is a lot to learn to get it right .It is not just bolt up some parts and go . Don't get discouraged when you dig into it . We all had to start at some point . Do your research and understand how to get the gear pattern correct . It is a art form to read the pattern and get it right . Theres a lot of info on the web that will help you and read up. You will also need some special tools .

I too am one that likes to take on the challenge and learn . Have a go at it and let us know how it is going .

[Captainfab]

Here is one thread from the FAQ section for you to read through. Unfortunately the photobucket pics aren't visable unless you have one of the programs that bypasses that.

http://67-72chevytrucks.com/vboard/s...d.php?t=484897